I were recently in the US for vacation. One of us had to go to the hospital (Thanksgiving - no doctor open). At the hospital, they just did a flut test. Positiv

I were recently in the US for vacation. One of us had to go to the hospital (Thanksgiving - no doctor open). At the hospital, they just did a flut test. Positive result, got tamiflu. We asked for a bill. They refused. Finally they somehow calculated it and said it was about 900$, we payed. BUT then they send another bill for 3000$ more (guess just for the registration at the hospital), on the bill we payed it was stated that it is not the final bill. To be precise the insurance payed. But it is obviously a rip off.